mechanism. To support this, make MachineFunctionPass a little more
complete.

llvm-svn: 77654

using the Curiously Recurring Template Pattern with LoopBase.

This will help further refactoring, and future functionality for
Loop. Also, Headers can now foward-declare Loop, instead of pulling
in LoopInfo.h or doing tricks.

llvm-svn: 75519

llvm-svn: 74394

address of the PassInfo directly instead of calling getPassInfo.
This eliminates a bunch of dynamic initializations of static data.

Also, fold RegisterPassBase into PassInfo, make a bunch of its
data members const, and rearrange some code to initialize data
members in constructors instead of using setter member functions.

llvm-svn: 51022

several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017

llvm-svn: 50695

llvm-svn: 45637

preserved.

llvm-svn: 45596

llvm-svn: 45418

llvm-svn: 44399

llvm-svn: 44384